/Engine/Source/Runtime/CoreUObject/Public/UObject/SoftObjectPath.h
Fixes up this SoftObjectPath to add the PIE prefix for the given PIEInstance index, returns true if it was modified
bool FixupForPIE ( int32 PIEInstance, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void(int32, [FSoftObjectPath](API\Runtime\CoreUObject\UObject\FSoftObjectPath) &)> InPreFixupForPIECustomFunction )